baber/WOPTO huggingface dataset:
Patent GB-426924-A (GB)
Title: Improvements in shoes and the manufacture thereof
IPC: A43B9/06
Filed: 1934-10-26
Abstract: 426,924. Welted footwear. TARLOW, I., 197, Moraine Street, Brockton, Massachusetts, U.S.A. Oct. 26, 1934, No. 30772. [Class 17 (ii)] To prevent cracking and deformation of the insole of a Goodyear welted shoe particularly upward curling of the feather as the bottom filling material becomes squeezed in wear, the fibres of the feather are strained, in a direction contrary to that in which it tends to be moved, by a lining or cover which may extend across the face of the insole or only at the edges thereof, and which, either before or after tacking on the last, is secured to the sewing lip to curl back the feather. As shown, a lining or cover 18, preferably of vegetable tanned calfskin, is cemented to the grain face of an insole 12 and preferably also to the edge face of the feather 14. Before assembly on the last 24, the margin 20 of the insole cover is secured at the tip of the toe and each end of the tip line to the sewing lip 16, and a last is inserted. The upper is pulled over and lasted in any manner, the upward pull on the insole cover 18 causing the feather 14 to curl away from the last, the insole cover or upper or both being secured to the sewing lip near its end to form a bridge of material between the edges of the feather and sewing lip which is stretched snugly down on the feather during the inseaming operation to face the feather back on to the last in a strained condition which resists curling upward in the shoe.
Patent GB-994421-A (GB)
Title: Improvements in or relating to flat-spring contacts
Inventor: PAYNE BRENDAN LEONARD
IPC: H01H1/42
Filed: 1960-09-07
Abstract: 994,421. Two-part couplings. PLESSEY CO. Ltd. Sept. 29, 1961 [Sept. 7, 1960], No. 30787/60. Heading H2E. A flat spring contact comprises a resilient metal strip 4 having at least a surface zone 7 or 8 of good electrical conductivity and folded an even number of times in acute angles such as 9 and 10 facing in opposite directions with one of the free ends 14 folded to engage the rear surface of a bend 9 retaining the adjacent end portion in a pre-tensioned position. The other free end of the strip projects through an aperture 15 in the base of a socket member 1 and is staggered at 16 to maintain the bend 10 clear of the base. As shown, the base is channel-shaped and contains two banks of contacts arranged opposite each other and separated by a ridge 3 so as to receive between them a printed-circuit panel 10. The contact strip may be formed of laminated material incorporating alternate layers of material of high conductivity and material of high elasticity.
Patent GB-634827-A (GB)
Title: Resonant electrical arrangement
IPC: H01P7/06
Filed: 1947-11-20
Abstract: 634,827. Frequency measurements; temperature compensation. HAZELTINE CORPORATION. Nov. 20, 1947, No. 30834. Convention date, Dec. 4, 1946. [Class 37] [Also in Group XL (b)] In a wavemeter, thermal expansion and contraction of an elongated frequency-determining element of a resonator is compensated by corresponding thermal changes in the dimensions of a supporting member for the element. The resonator comprises a conducting cylinder 11 having a portion 40 separated from a portion 16 by a member 12. A conducting plunger 10, supported by a guide member 20 and a ring of conducting fingers 13, protrudes into the portion 40 to form a co-axial resonator, the frequency of which depends on the length A of the protruding part of plunger 10. The other end 19 of the plunger is pressed by a spring 37 against the end of a screw-threaded rod 30, engaged in an end-plate 26 of portion 16. The rod 30 may be turned by crank 33 to vary the frequency, a calibrated scale 36 being provided. The main parts 10, 11 are made from relatively cheap metal such as steel or brass, the inside of resonator 40 being silver-plated while plunger 10 is in addition plated with rhodium or palladium to resist wear. Rod 30 and its bearing 56 are made of a nickel-iron alloy having a very small temperature co-efficient of expansion. In order that the length A of the plunger 10 protruding from partition 12 remains constant at all temperatures, the length B of the plunger multiplied by its coefficient of expansion is made equal to the length D of portion 16 multiplied by its coefficient of expansion. The signal generator 50 to be tested is connected to a feed loop 51, and the detector and meter 53 are connected to a diametrically opposite loop 52.
Patent GB-825118-A (GB)
Title: Process for recovering vitamin b factors (cobalamins)
IPC: C07H23/00
Filed: 1957-10-02
Abstract: The invention comprises cobalaminium tetraphenyl boron, cobalaminium triphenyl cyano boron, cobalaminium tri-p-tolyl cyano boron, cobalaminium triaryl cyano boron, and a process for recovering Vitamin B12 factors from an aqueous solution containing Vitamin B12 which comprises precipitating in said solution a cobalaminium complex with a member of a group consisting of ((C6H5)4B) -, ((C6H5)3CNB) -, ((p-C6H4,CH3)3CNB) -, separating said water-insoluble complex, and recovering Vitamin B12 from said complex.  Preferably the pH of the Vitamin B12 aqueous solution is adjusted to about 3-4 prior to the addition of a water-soluble alkali metal salt of the boron complex, e.g. the sodium or lithium salt.  The cobalaminium boron complex is separated, dissolved in a suitable solvent, e.g. acetone or acetonitrile, filtered and decomposed by means of a basically reacting alkali metal salt, e.g. alkali metal hydroxide, cyanide, nitrite and rhodanide. Alternatively, a concentrated solution of alkali metal cyanide may be added to the cobalaminium complex compound in acetone, to form dicyano cobalamins from which Vitamin B12 is obtained.  The process is illustrated in detail.
Patent GB-1085157-A (GB)
Title: Compression springs of elastomeric material
Inventor: GLADSTONE DENNIS JOHN
IPC: F16F9/58
Filed: 1965-07-21
Abstract: 1,085,157. Non-metallic springs. VAUXHALL MOTORS Ltd. June 27, 1966 [July 21, 1965], No. 30940/65. Heading F2S. An elastomeric spring comprises a hollow body 10 having a frusto-conically surfaced portion 12 which merges at its wider end into a centrally apertured end wall 14 and at its narrow end into a convexly-surfaced bulb portion 22 which terminates in an incurved lip. Three radial vent apertures 18 at separations of 120 degrees may be provided in the end wall 14. The elastomeric material may comprise a natural rubber or a butadienestyrene elastomer. In the construction of Fig. 5 (not shown) the spring is interposed between a disc secured to the piston rod of a shock absorber and a disc secured to the casing of the same. The spring is bonded to the piston rod disc. Further the shock absorber piston rod may be provided with a rigid tube in the form of a dust shield the rigid tube limiting the radial bulging of at least the base portion of the spring (Fig. 6, not shown).
Patent GB-869550-A (GB)
Title: A process for the production of boron alkyls and of highly active aluminium oxide
IPC: C07F5/02
Filed: 1958-09-29
Abstract: Boron alkyls are produced by reacting an alkyl boroxole with an aluminium trialkyl or with an aluminium dialkyl hydride of the general formula AlHR2 in which R represents an alkyl radical, or with mixtures and separating the boron alkyl formed from the reaction product.  When using aluminium dialkyl hydrides, alkyl diboranes of the general formula B2H2R4 are also formed.  The preferred molar ratio of organic aluminium compound to boroxole is 2:1.  The reaction may be carried out in two stages, the first using temperatures below 100 DEG C., and the reaction being completed at temperatures above 100 DEG C., preferably 150 to 220 DEG C.  The reaction may be carried out in solvents such as aliphatic and aromatic hydrocarbons, ethers and amines or an excess of boron alkyls and aluminium oxide formed as reaction products can be separated by removing the boron alkyls by distillation, filtration or extraction.  The process may be carried out continuously, a suitable continuous process being described and illustrated.  The alkyl boroxole is obtained by heating boron trioxide with a boron trialkyl e.g. at 250-300 DEG C. Specification 836,792 is referred to.ALSO:Highly active aluminium oxide is made by reacting an alkyl boroxole with an aluminium trialkyl or with an aluminium dialkyl hydride of the general formula AlHR2 in which R represents an alkyl radical, or with mixtures, and separating the boron alkyl formed from the reaction product.  The preferred molar ratio of organic aluminium compound to boroxole is 2:1.  The reaction may be carried out in two stages, the first using temperatures below 100 DEG C., and the reaction being completed at temperatures above 100 DEG C., preferably 150 DEG  to 220 DEG C.  The reaction may be carried out in solvents such as aliphatic and aromatic hydrocarbons, ethers and amines, or an excess of boron alkyl.  The aluminium oxide and boron alkyls formed as products can be separated by removing the latter by distillation, filtration or extraction. The process may be carried out continuously, a suitable continuous method being described and illustrated.  If the alkyl boroxole reacts completely with the aluminium compound, the aluminium oxide separates as a firm jelly which is converted by vigorous stirring into a paste suitable for concentration in an evaporator.  Specification 836,792 is referred to.
Patent GB-1131523-A (GB)
Title: Polyethylene terephthalate film and process for its preparation
IPC: B29C55/00
Filed: 1966-07-11
Abstract: 1,131,523. Polyethylene terephthalate film; polyethylene terephthalate laminates. E. I. DU PONT DE NEMOURS & CO. 11 July, 1966 [12 July, 1965], No. 31059/66, Headings B5B and B5N. [Also in Divisions C7 and H1] A heat-set polyethylene terephthalate film is non-fibrillating, is predominantly unidirectionally oriented by an elongation of at least 4 x the original dimension, and has an I.V. of at least 0À65, a tensile strength of at least 50,000 p.s.i., a shrinkage at 105‹ C. not exceeding 10% in the direction of orientation, and an elongation at break of at least 50% at a stretch rate of 100%/min. in the direction transverse to orientation. Stretching and heat-setting are effected conventionally, e.g. at temperature above 80‹ C. and 150‹ C. respectively. The film may be partially or wholly restrained from shrinking during heat-setting. A laminate comprises a film as above, which has been vacuum coated with aluminium, and adhered on the metal coated side to an adhesive coated film, also as above.
Patent GB-310785-A (GB)
Abstract: 310,785. North, R. B., and Allen, A. Massey-. Jan. 31, 1928. Shaft couplings.-Relative angular adjustment of the driving and driven shafts with increasing speed is produced by masses h movable about pivots g<1> projecting from a disc f carried by the driving shaft. As shown in Fig. 1 the masses h have forked ends traversed by pins carrying antifriction rollers j, which bear against cam surfaces e formed in members d carried by the magneto shaft a. When at rest, a line through the centres of the pivot g<1> and roller j is substantially tangential to the hub c. During the first part of its movement the roller j moves over a part of the cam which has the pivot g' for its centre of curvature; no adjustment is therefore produced at low speeds. Higher speeds, however, bring the roller against the " steeper " part of the cam and produce the required relative adjustment of the shafts. The centrifugal movement is opposed by springs k secured at one end to projections on the driving disc and at the other to pins m projecting laterally from members d. In a modification, instead of projections d from the hub c, slots having an outline e as in Fig. 1 are formed in a disc carried by the hub. The disc f is in the form of a hollow gear-wheel, the hub of which is revoluble on an extension of the hub c. End. wise movement of the gear is prevented by a shoulder on the nut which tightens the hub on the magneto shaft. In another modification the disc f is formed with a rim f<2>, Fig. 6, to form a casing which is closed by a plate p having coupling teeth q.
Patent GB-1467181-A (GB)
Title: Inverter arrangements
IPC: H02M7/48
Filed: 1974-07-12
Abstract: 1467181 Inverting SIEMENS AG 12 July 1974 [13 July 1973] 31090/74 Heading H2F In a method of controlling an inverter arrangement comprising two square-wave inverters W11, W12 having an output combined by a tapped choke D1, the output voltage is determined by control of the relative phase of the two square-wave inverters W11, W12 so that, over a range of control angle, the output voltages have opposite polarity and simultaneously reversing the output voltages at least once within the control angle range. The size of inductor D1 may thus be reduced. Fig. 1 shows a three-phase inverter for supplying an asynchronous motor B and comprising six elemental square-wave inverters W11 ... W32 supplied from a DC supply Ug e.g. a battery, trolley line or uncontrolled rectifier. The voltages are monitored at G and compared at R with a desired value voltage from potentiometer Pf. The error voltage is supplied to a control unit ST which has an additional input Uf arranged so that the frequency is proportional to voltage. Control unit ST arranges the phase difference between individual pairs of thyristor squarewave inverters such as W11, W12, to be such as to. provide the required voltage at the centre point of inductor D1 and to reverse the polarity several times during the range of control angle in which the two elemental inverters have opposite polarity, as shown in Figs. 6-9. Generating control pulses for inverters.-Fig. 11 shows details of the control unit ST of Fig. 1. An oscillator O provides a triangular voltage D and a synchronous square wave V at a frequency depending on the setting of potentiometer Pf, which is arranged to be three times the required fundamental frequency. The triangular voltage D is fed into an adding stage F where it is superimposed upon a voltage Pd so as to provide a pair of triangular waves DI, DII in antiphase and always of the same polarity. The desired voltage signal Ust is fed into a potential divider P (Fig. 31, not shown) having switching transistors arranged to select different values U1 ... U3 from the potential divider P and feed them into comparator groups CI, CII. Pulses of different duration are thereby derived which are fed into modulation logic circuits MI, MII, which feed circuits H1 ... H3 with such pulses that after gating by the outputs of ring counters BI, BII, trigger pulses are developed which after shaping at E11 ... E32, can be fed to the thyristors of the respective elemental inverters.
Patent GB-554406-A (GB)
Title: Improvements in and relating to lubricants for metallic surfaces and methods of making same
IPC: C23C22/00
Filed: 1939-11-30
Abstract: 554,406. Disc mills. GALVIN, M. J. Nov. 30, 1939, No. 31147. [Class 59] [Also in Group III] Molybdenite for use in a lubricant (see Group III) is ground in a mill consisting of a grinding disc 5 which is mounted on a tubular shaft 1 driven by an electric motor 4 and co-operates with a grinding disc 6 mounted on a shaft 7 driven through gearing from a shaft 1. The grinding discs are contained in a vacuum chamber 16 provided with a suction pipe 17 through which the ground material is drawn off.
Patent GB-425777-A (GB)
Title: Improvements in driving mechanism for tandem bicycles
IPC: B62M9/10
Filed: 1933-11-09
Abstract: 425,777. Driving - mechanism for tandem bicycles. FENNER, E. F., 31, Coverton Road, Tooting, London. Nov. 9, 1933, No. 31217. [Class 136 (ii)] Chain driving-mechanism for tandem bicycles comprises driving sprocket-wheels on the front and rear pedal-crank axles and a driven sprocket-wheel on the rear road wheel all mounted in alignment. A single chain 1 passes round the front and rear sprocket-wheels and is held in engagement with the uppermost teeth only of the middle sprocket-wheel 2 by means of a flat strip or guide-plate 4. This plate is adjustably mounted by eccentric bolts 5 on two arms 6 fixed to or integral with the crankaxle bracket 7. A jockey wheel 8 is adjustably mounted in a slot 9 on an arm 10 to tension the lower stretch 1<x> of the chain.
Patent GB-262814-A (GB)
Title: Improvements in galvanic cells
IPC: H01M6/26
Filed: 1926-12-10
Abstract: 262,814. Heil, A. Dec. 10, 1925, [Convention date]. No Patent granted (Sealing fee not paid). Electrodes; arrangement; electrolytes; moving electrodes; connections; connections to carbons.- A cell is provided with a number of parallel plates 3 forming the positive electrode, and a narrow zinc plate 8 on each side of the plate assemblage 3 forming the negative electrode. The plates 3 are fixed to a common holder 4 which is attached to the cover 2 by screws 5, 6 which may form the positive terminals. The plates 8 are secured to rods 7 which are vertically slidable in slots in the cover and are clamped between spring strips 9, 10 to which a terminal 11 is attached. The positive plates may be made of a chromium alloy such as chromium nickel or chromium cobalt, or carbon impregnated with paraffin may be used. The electrolyte may consist of dilute sulphuric acid to which may be added a depolarizing salt such as sodium nitrate or potassium bichromate. The spring strips 9, 10, terminals and other metal parts may be made of non-rusting steel.
Patent GB-377534-A (GB)
Title: Improvements in the automatic movement of head lamps for motor vehicles
IPC: B60Q1/124
Filed: 1931-11-13
Abstract: 377,534. Directing vehicle lamps. ROCKENDORF, R., 23, Parkstrasse, Bad- Lauchstadt, Germany. Nov. 13, 1931, No. 31503. Convention date, Nov. 15, 1930. [Class 75 (iii).] Means for directing vehicle headlights from the steering gear comprises a cylinder 10 containing oil between two oppositely-disposed pistons 11, 12 connected respectively with the steering gear and a mechanism for swivelling the lamps. As shown, the piston-rods are provided with racks 31, 32, the rack 31 being connected to the steering column 50 through gearing 41, 42, 43, and the rack 32 to the lamps 60 through a spur-wheel 44 and worm gears 45 on a single shaft. The cylinders are provided with compression springs 13, 14 for returning the lamps to the normal position. In a modification the rear piston-rod is connected to an arm provided on the steering swivel pin of a front wheel.
Patent GB-1062663-A (GB)
Title: Electrostatic image recording medium
Inventor: GESS JEROME MURRAY
IPC: G03G5/10
Filed: 1963-08-09
Abstract: An electrostatic image-recording medium comprises a sheet of paper having dispersed therein an electrolytic conductor comprising a quaternary ammonium salt in admixture with a deliquescent salt and carrying on one surface a layer of a dielectric material consisting of a synethetic resin.  The deliquescent salt may be LiCl, LiBr, ZnCl2, CaCl2 or MgCl2.  The quaternary ammonium salt may be a compound having the general formula <FORM:1062663/B1-B2/1> wherein R1 and R2 are C1-7 alkyl groups, R3 is a C8-18 aliphatic hydrocarbon radical, R4 is benzyl, optionally substituted with halogen, alkyl, alkylether and/or hydroxyalkyl ether alkyl groups, and X is Cl or Br; or R1, R2 and R3 are C1-7 alkyl groups, R4 is a C8-21 aliphatic hydrocarbon radical or a radical containing alternating aliphatic and aromatic groups, X being halogen or a nitrate group.  Alternatively water-soluble polymeric quaternary ammonium salts may be employed which are obtained by polymerisation of compounds having the above general formula, wherein R1, R2 and R3 are C1-7 alkyl groups or C2-7 alkenyl groups, R4 is a C6-20 aliphatic hydrocarbon radical or a radical containing alternating alkyl or alkenyl and aryl groups, at least one of said R1, R2, R3 and R4 radicals containing a polymerisable -CH=CH- grouping, and X is Cl, Br, nitrate or hydroxyl. Specified quaternary ammonium salts include alkyl dimethyl benzyl ammonium chlorides, para diisobutyl phenoxy ethoxy ethyl dimethyl benzyl ammonium chloride, lauryloxy hydroxypropyl trimethyl ammonium chloride, stearamido propyl dimethyl-b -hydroxy ethyl ammonium nitrate, cety1oxy-hydroxy-propyl trimethyl ammonium chloride, poly (vinyl benzyl trimethyl ammonium chloride), poly (N,N dimethyl-N-benzylamino ethyl acrylate chloride) and poly (N-benzyl ethyl pyridyl ethyl acrylate chloride).  The synthetic resin layer may comprise polyvinyl acetate.  The layer may be applied to one side of a web of paper from a coating bath or by air knife, coating or doctor blading and thereafter the opposite side may be impregnated by spraying with an aqueous solution of the quaternary ammonium salt-deliquescent salt mixture. Alternatively, the base sheet may be impregnated with the above aqueous solution prior to application of the dielectric coating material.
Patent GB-781194-A (GB)
Title: Improvements in fluid filters
IPC: B01D39/08
Filed: 1954-11-02
Abstract: 781,194. Gas filters. WILLIAMS, R. H. E. Nov. 1, 1955 [Nov. 2, 1954 ; Feb. 8, 1955], Nos. 31682/54 and 3761/55. Class 8(2). A gas filter comprises a substantially selfsupporting corrugated sheet of woven fabric 10, Fig. 2, including yarns of thermoplastic material e.g., nylon and the edges of the corrugated element are embedded in a cast plastic frame 9 surrounded by a channelled metal frame 11. The pleats may be held in position by spaced aluminium strips 12 bonded to the crests and embedded in the plastic frame 9. Alternatively plastic covered rods may be bonded to the crests or expanded metal may be secured to both sides of the pleated fabric. In a still further modification the pleats are held apart by comb-like members 23, Fig. 8. To effect corrugation the fabric 10 is pressed over fins 17, Fig. 6, of a jig 16 which is then heated to above the softening temperature of the yarn. Two layers of woven polyethylene or polyamide fibres may be separated by a thin layer of felted fibres.
Patent GB-902316-A (GB)
Title: Improvements in carrier bags or boxes
IPC: B65D5/46
Filed: 1960-09-14
Abstract: 902,316. Handles for carrier bags, &c. GATWARD, H. F. Dec. 5, 1960 [Sept. 14, 1960], No. 31689/60. Classes 18 and 133. A carrier bag or box is formed with a slot 1 through which a string handle 4 is passed, the slot being intersected near its ends by further slots 6 which with slots 1 provide parts 7 which grip the handle 4. The slot 1 is narrower than the cross-sectional diameter of the string and is provided with a wider section 8 so that the handle 4 may easily be inserted. Slots 1 may be formed in both side members of the bag and the string held in place in one of them by a strengthening member 5 glued into place. Specification 794,600 is referred to.
Patent GB-1511665-A (GB)
Title: Method and composition of matter for reducing discoloration in carbonless copying systems
IPC: B01J13/02
Filed: 1975-07-29
Abstract: 1511665 Microcapsules MOORE BUSINESS FORMS INC 29 July 1975 [29 July 1974] 31720/75 Heading D2B [Also in Division B8] Microcapsules which are useful in connection with carbonless copying systems comprise minute, discrete droplets of liquid fill material including an initially colourless chemically reactive colour forming dye precursor and a carrier or solvent therefor, individual, rupturable, generally continuous polyamide shells encapsulating said droplets and an amount of a resin effective to render the microcapsules resistant to inadvertent release and transfer of the fill material incorporated in the fill material, the resin being either a polystyrene or an epoxy resin. The resin is suitably an epichlorohydrin/bis phenol A epoxy resin. The dye precursor may be Michlers hydrol, ptoluene sulfinate of Michel's hydrol, methyl ether of Michlers hydrol, benzyl ether of Michlers hydrol and a morpholine derivative of Michlers hydrol. The carrier is suitably dibutyl phthalate. A record copying sheet may be formed having a coating of the microcapsules on one side thereof.